Submerging injector for molten material



June 17, 1969 M. DOLINSKY, SR

SUBMERGING INJECTOR FOR MOLTEN MATERIAL Filed March l7, 1966 ATTORNEYSUnited States Patent 3,450,191 SUBMERGING INJECTOR FOR MOLTEN MATERIALMichael Dolinsky, Sr., Reading Texile Casting Corp. Bldg., RD. 1,Birdsboro, Pa. 19508 Filed Mar. 17, 1966, Ser. No. 535,124 Int. Cl. B22d17/00; B29f 1/06 U.S. Cl. 164-312 4 Claims ABSTRACT OF THE DISCLOSUREwalls.

This invention relates to a submerging injector for the handling ofmolten material and which functions by being submerged in a bath ofmolten material while molten material is sucked into the barrel of achamber, after which the barrel is lifted from the molten bath andcoupled to a mold for the discharge of the molten material from thebarrel whereby the material is cast to the shape of the interior of themold.

Heretofore, it has been known to supply molten material to molds bypouring such material into the receiving opening or funnel-like openingcharacteristic of such molds. Such has been the practice in handlingsuch metals as lead and similar materials which are readily melted atrelatively low temperatures.

This improvement relates to a manually operated device by which themolten metal may be drawn into a barrel and forced from the latter intoa mold without waste or loss of molten material and without contactbetween the atmospheric air and the molten material. In this movement ofthe molten metal, it is drawn into the barrel and forced outwardly intoa mold through a common orifice. Consequently there is absence of heatloss and a saving is effected by confining the molten material withinclosed walls.

The device is light in weight and is readily manipulated by an operatorstwo hands. By one hand the operator supports the weight of the deviceand positions it while charging it with molten material and moving it tothe receiving opening of a mold. By the other hand the piston within thedevice is provided with a pull and thrust effect similar to the actionof a piston within a barrel.

The foregoing general outline of the device of this invention andadditional features are described and claimed in the followingspecification and claims when considered in connection with theaccompanying drawings in which:

FIG. 1 is a side view of the submerging injector in elevation andshowing the same within a tank adapted to contain molten material whilein position to draw a charge of such material into the barrel of thedevice;

FIG. 2 is an end view of the device shown in FIG. 1, the tank not beingillustrated;

FIG. 3 is a fragmentary view in section similar to that shown in FIG. 1and somewhat enlarged to illustrate the loading stroke of the pistonwithin the barrel, the molten material having been drawn into thebarrel;

FIG. 4 is a cross sectional view taken on the line 44 of FIG. 1 lookingtoward the handles and showing the grooves extending lengthwise of thepiston; and

FIG. 5 is a view illustrating the location of the barrel of the injectordevice as fitted to the receiving opening of 3,450,191 Patented June 17,1969 a mold, the piston having forced a substantial portion of themolten material into the mold.

Referring in detail to the several figures of the drawing, 1 indicatesthe outer wall of the barrel of the injector 2 is the inner wall orchamber of the injector and 3 is the piston or plunger which is mountedwithin the wall 2. The combined receiving and discharge end of thebarrel 1 terminates in a reduced portion 4 which may be either conicalor such other shape as may conform to the receiving end of a mold. Thecombined receiving and discharge end of the barrel 1 is indicated at 4.In FIGURES 1, 2, 3 and 5, the end 4 has a common orifice through whichthe molten metal may be drawn into the piston and forced outwardly fromit. Preferably the end wall of a mold will have the mold opening soshaped that it will fit the discharge end 4 of the device. Substituteplates may be used on the mold to provide shapes conforming to the end 4of the injector device. Leading inwardly from the extreme end of thepart 4 is a duct 5 through which molten material is sucked into thechamber of the injector under the influence of the action of the piston3.

The outer wall of the barrel 1 is supported by a framework 6 and itsassociated parts as will be described. This framework includes anangular member, one arm of which is securely mounted on the undersurface of the barrel 1 by the use of the screws 6. The frame 6 extendsdownwardly and at its lower end is a spacing member 6 extendinglaterally to the barrel 1. At the extreme end of the spacing member 6most distant from the angular member 6 there is an upwardly extendinghandle member 7, on the upper portion of which there is provided a handgrip of wood 8 or other conductor resistant to the transference of heat.This hand grip portion is secured by suitable screws 9.

Means for manipulating the plunger or piston 3 is provided by means of ahandle portion 7 which is firmly connected to the extreme outer end ofthe piston. At the upper portion of the handle 7 is a grip portion 8secured by means of screws 9 as similar to the handle portion at theupper end of the other handle.

Protecting means for insuring against discharge of gases or accidentalsprinkling of molten metal is provided by means of a plate 10 mountedjust above the discharge end of the barrel. This is shown in FIG. 2 asconforming to the contour of the upper surface of the barrel as beingthree-sided in cross sectional shape. This plate may be secure-d asdesired. This plate 10 is shown in FIGS. 1, 2, 3 and 5.

Another form of protecting plate is shown at 11 in FIGS. 1, 2 and 4 asbeing in the shape of a washer encircling the piston or plunger 3 andadjacent the end of the barrel 1.

Referring to FIG. 5, it will be observed that a removable plate 12 isshown on the end of the mold next adjacent the extreme end 4 of thebarrel.

Referring further to FIG. 5, it will be observed in FIGS. 3, 4 and 5that the piston 3 is provided with grooves 3 on its opposite sides andin FIG. 4 the grooves are indicate-d as V-shaped. These grooves servefor the escape of gases from the interior of the chamber 2 lengthwise,rearwardly toward the handle 7. The protecting disc 11, above mentioned,thus serves to prevent any splattering of metal which might pass outthrough the grooves 3 Preferably the end of the barrel having thereduced portion 4 is detachable from the main body of the barrel. Inthis arrangement the barrel is provided with an inwardly extendingopening 13 which is adapted to receive the end of the nozzle member 4,the outer end of which is adapted to fit a mold opening. Substitutenozzle shapes may be provided for the opening 13.

The nozzle 4 may be secured within the barrel 1 by any suitable means.The nozzle and barrel may be screw threaded or if the nozzle is simplyslidable within the inner wall 2 of the barrel 1, it may be secured by asuitable fastening screw mounted on the exterior of the barrel andextending through the barrel to engage the exterior surface of thenozzle 4.

I claim: 1. A submerging injector for handling molten material,comprising a barrel adapted to receive and to discharge molten materialthrough a common orifice to a mold, a supporting frame for said barrel,an upwardly extending handle secured to said frame and whereby saidframe may be manipulated, a piston within said barrel adapted to drawmolten material into said barrel and to force molten material outwardlythrough a common orifice into a mold, an upwardly extending handleconnected to said piston and by which said piston may be operatedmanually, a bafiie-like shield mounted on said piston and located at theexterior of said barrel and in the general shape of a flat washerserving to prevent rearward discharge of metal spray lengthwise of saidpiston, and a nozzle at the orifice end of said barrel adapted to fitinto the receiving end of a mold opening.

2. A submerging injector of the type defined in claim 1 in which thepiston has on its opposite sides grooves extending lengthwise thereofwhereby gases from within said barrel may escape.

4 3. A submerging injector of the type defined in claim 1 in which thepiston has on its opposite sides V-shaped grooves extending lengthwisethereof whereby gases from within said barrel may escape.

:4. A submerging injector of the type defined in claim 1 in which thedischarge end of the barrel is provided with a nozzle, and a shieldmounted on the end portion of the barrel overhanging said nozzle toprevent scattering of molten metal.

References Cited UNITED STATES PATENTS 356,200 1/1887 Ives l83.5

760,027 5/1904 Selley 183.5 1,078,440 11/ 1913 Jacobs l83.5 1,216,8922/1917 Vasica 164312 XR 2,704,379 3/1955 Bunker 183.5 3,058,450 10/ 1962Lissau. 3,242,600 3/1966 Boxer et al 92l81 J. SPENCER OVERHOLSER,Primary Examiner. R. SPENCER ANNEAR, Assistant Examiner.

US. Cl. X.R.

